CVE-2025-8567: medium-severity vulnerability in posimyththemes Nexter Blocks – Gutenberg…
Nexter Blocks <= 4.5.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Widgets
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.3%
The Nexter Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple widgets in all versions up to, and including, 4.5.4 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected products
posimyththemes · Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website BuilderRelated CVEs — posimyththemes Nexter Blocks – Gutenberg…
In the same product, most dangerous first.
CVE-2026-15420MEDIUMNexter Blocks <= 5.0.0 - Authenticated (Subscriber+) Path Traversal to Arbitrary CSS/JS File Deletion via 'plus_name' ParameterEPSS 0.9%CVE-2024-5020MEDIUMMultiple Plugins <= (Various Versions) - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via FancyBox JavaScript LibraryEPSS 0.4%CVE-2026-6740MEDIUMNexter Blocks <= 4.7.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'commentIcon' Block AttributeEPSS 0.3%